The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 1999
Filed:
Apr. 15, 1997
Masako Murofushi, Yokohama, JP;
Takashi Ishioka, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In order to modify a combination of logic gates based on relationships between physical locations of the logic gates in a semiconductor integrated circuit which has already been subjected to layout design in the middle of design of the semiconductor integrated circuit, circuit portions whose combination is to be modified are specified, then the circuit portions are transformed into logically equivalent intermediate representations (NAND2s, IVs, etc.), then anew combination of the logic gates is generated based on the intermediate representation, and then the prior combination of the logic gates is replaced with the new combination of the logic gates.